Eyeglasses
Theory-FL03
Frais de livraison calculés au moment du paiement.
- Free shipping over €99
- 14-day frame returns
- 3-month warranty
IGIOO Theory-FL03 Grey Round Acetate Eyeglasses
Give your everyday eyewear a softer, retro-inspired look with IGIOO Theory-FL03. These grey round eyeglasses feature a full-rim acetate frame and a unisex design for men and women. The neutral grey color brings an understated alternative to classic black frames.
Pair them with a crisp shirt for your workday or a favorite sweater for a relaxed coffee outing. The rounded silhouette adds character without making your glasses the only focus of your outfit.
Frame Highlights
- Grey frame color: A neutral option for casual and professional styling.
- Acetate construction: A full-rim acetate frame that surrounds each lens.
- Round shape: A vintage-inspired silhouette for those who enjoy rounded eyewear.
- Unisex design: An option for men and women looking for grey round glasses.
- Size M: Compare the detailed measurements below with your current glasses to assess fit.
Specifications and Measurements
- Brand: IGIOO
- Model: Theory-FL03
- Frame color: Grey
- Frame material: Acetate
- Frame shape: Round
- Rim type: Full-rim
- Gender: Unisex
- Listed size: M
- Lens width: 50 mm
- Bridge width: 23 mm
- Temple length: 145 mm
- Frame width: 144 mm
- Lens height: 42 mm
Find Your Everyday Fit
Start with the measurements of a pair you already wear comfortably. Compare the 50 mm lens width, 23 mm bridge and 145 mm temples, then check the 144 mm overall frame width. A size label alone does not determine fit.
Frequently Asked Questions
Are Theory-FL03 eyeglasses for men or women?
IGIOO Theory-FL03 is a unisex eyeglasses frame designed for men and women.
What material and shape does this frame have?
Theory-FL03 is a round, full-rim acetate frame in grey.
What size are these grey round eyeglasses?
The listed size is M. The frame has a 50 mm lens width, 23 mm bridge, 145 mm temples, 144 mm frame width and 42 mm lens height.
Is Theory-FL03 listed as prescription eyewear?
Theory-FL03 is listed in IGIOO's prescription eyeglasses range. Confirm the available lens options and suitability for your individual prescription before ordering.
Does the grey frame color indicate tinted lenses?
No. Grey describes the frame color, not a lens tint or coating. Check your selected lens options separately.
Shipping & returns
Free worldwide shipping on orders over €99. Non-prescription glasses ship within 2–3 days, prescription glasses within 2–8 days. You can return a frame within 14 days. Prescription lenses are made to order for you, so they can’t be returned – if you send back prescription glasses, we refund the frame. See returns & exchange and shipping & tracking.
Care & warranty
Every pair comes with a 3-month warranty against defects in materials and workmanship. Clean your lenses with the included cloth and keep your glasses in their case when you are not wearing them.

Theory-FL03
Theory-FL03
Lenses made for you
Single vision, progressive, reading or plain – then blue light, light-adaptive or sun lenses. You choose everything in the next step.
14-day frame returns
Not the right look? Return the frame within 14 days. Prescription lenses are made just for you, so only the frame is refunded.
3-month warranty
Every pair is covered against defects in materials and workmanship for 3 months.
Find your fit.
- ALens width
- 50 mm
- BBridge
- 23 mm
- CLens height
- 42 mm
- DFrame width
- 144 mm
- Temple length
- 145 mm
- Material
- Acetate
- Shape
- Round
Compare with a pair you already own – the sizes are printed inside the temple. Not sure? Ask us.
Questions about size or lenses?
Send us your prescription or a photo of your current glasses – we help you choose the right frame and lenses.



